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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 283 days






2. 24 hours before end of estrus cycle






3. Produce testosterone. located between the seminiferous tubules






4. Check feet and legs - look for masculine traits in build such as crest and muscling






5. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






6. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






7. Sperm is produced here






8. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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9. Prevent the cow from getting an infection from the calve






10. Days which have increasing daylight hours

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11. 14-19 (17) days






12. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






13. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






14. Look for infection - split - and rupture of the penis






15. 45-60 days after breeding; re-breed as required






16. Microscopic - make sure not sterile - very few bulls are actually tested






17. Front feet and head first. (except for hogs and dogs)






18. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






19. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






20. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






21. (male) pushes the testes outward toward the legs for a cool-down off of the body






22. Days which have decreasing daylight hours

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23. Animals which have only one estrous cycle (ex: dog - fox)






24. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






25. 45-60 days after breeding; re-breed as required






26. 2 month growth cycle. stored in the epididymis of the bull






27. 30 hours after estrus begins






28. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






29. 336 days






30. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






31. 30 hours after estrus begins






32. 26 hours after estrus begins






33. 1-2 days






34. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






35. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






36. Why does estrus happen before ovulation?






37. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






38. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






39. 1. brain function - 2. blood flow - 3. willing female






40. Sperm production






41. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






42. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






43. Milk is 15% ________ and 85% __________.






44. 1. brain function - 2. blood flow - 3. willing female






45. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






46. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






47. When are steers and heifers weaned from bottle feeding?






48. Implies the amount of estrogen production






49. Front feet and head first. (except for hogs and dogs)






50. ~305 days (altough often longer due to breeding difficulties)